WO2019141021A1

WO2019141021A1 - Inflation device

Info

Publication number: WO2019141021A1
Application number: PCT/CN2018/120258
Authority: WO
Inventors: 张舰
Original assignee: 深圳市健英科技有限公司
Priority date: 2018-01-19
Filing date: 2018-12-11
Publication date: 2019-07-25
Also published as: CN108087604A; CN108087604B

Abstract

An inflation device with a simple deflation operation comprises an air bag (10) and an air valve (20). The air bag (10) is hollow, and communicates with a valve cavity (201) of the air valve (20). The air valve (20) comprises an upper valve body (21), an upper valve pad (22), a button (24), a rotary plate (25), a lower valve body (26), a lower valve pad (27), a pushing member (28), and a reset spring (29). The upper valve body (21) is provided with an air inlet (211). The upper valve pad (22) is provided at a bottom portion of the upper valve body (21) and used for sealing the air inlet (211), and can be opened in one direction. The lower valve body (26) is provided with an air outlet (261). The lower valve pad (27) is provided at a bottom portion of the lower valve body (26) and used for sealing the air outlet (261), and can be opened in one direction. When the button (24) is pressed by a preset amount, the rotary plate (25) moves axially to push the upper valve pad (22) open and push, via the pushing member (28), the lower valve pad (27) open, and simultaneously rotates circumferentially to engage with and be stopped at the upper valve body (21), thereby discharging air continuously.

Description

Inflator

Technical field

The invention belongs to the technical field of inflatable devices, and in particular relates to an inflatable device with simple deflation operation.

Background technique

As people go out to work or travel more and more, many inflatable products, such as inflatable toys, swimming rings, inflatable pillows, air mattresses, etc., are used more and more widely, and the gas in the product will be emptied when not in use. In order to reduce the volume, it is convenient to carry and store. When it is needed, the product needs to be inflated. The most primitive method of inflation is to blow through the mouth of the mouth against the nozzle on the product, but this is time consuming and laborious, and not sanitary. If you use a pump or other tool to inflate, it will save you a lot of time and effort, but it is more troublesome to carry tools such as a pump.

In order to facilitate the inflating, an inflator installed on the inflatable product is currently available on the market, and the device includes an air valve and an air bag. The upper and lower ends of the air valve have an air inlet and an air outlet, and the air inlet and the air outlet A sealed valve gasket that controls the flow of the airflow in one direction is provided, and the air can be filled into the product through the air valve by repeatedly clamping the compression airbag. However, such an inflator is inconvenient to operate during deflation, and it is necessary to continuously open the sealing valve gasket at the air inlet and the air outlet with a finger or other auxiliary tool to completely release the air in the product.

Summary of the invention

The object of the present invention is to provide an inflator device, which aims to solve the problem that the inflator device in the prior art is inconvenient to operate during deflation, and it is necessary to continuously open the gasket at the air inlet and the air outlet with a finger or other auxiliary tool. A technical problem that allows the air inside the product to completely escape.

The present invention is achieved by the present invention. The inflator includes an air bag and a gas valve. The air bag is hollow inside and communicates with a valve cavity of the air valve. The air valve includes an upper valve body, an upper valve pad, and a button. a turntable, a lower valve body, a lower valve pad, a pushing member and a return spring; the upper valve body is provided with an air inlet, and the upper valve pad is disposed at a bottom of the upper valve body for sealing the air inlet The port can be opened in one direction; the lower valve body is provided with an air outlet, and the lower valve pad is disposed at the bottom of the lower valve body for sealing the air outlet and can be opened in one direction; Between the upper valve pad and the lower valve pad, the return spring is disposed between the pusher and the lower valve body; when the button is pressed to a preset stroke, the turntable moves axially to The upper valve cushion is opened and the lower valve cushion is opened by the pushing member, and simultaneously rotated circumferentially to be locked on the upper valve body.

Specifically, the upper valve body includes a positioning cylinder fixedly connected to an inner wall thereof, and the inner wall of the positioning cylinder is provided with n axially extending ribs evenly spaced circumferentially; the button and the turntable are axially Arranging in the positioning cylinder, the outer peripheral surface of the button is correspondingly provided with a first guiding groove fitted with each of the ribs, and the bottom of the button is evenly provided with 2n top teeth in the circumferential direction; Correspondingly, a second guiding groove is formed on the surface of the rib, and the top of the rotating table is correspondingly provided with rotating teeth matched with the top teeth in the circumferential direction, and the tooth surface on one side of the rotating tooth Fitted to the bottom end of the rib.

Further, the bottom end surface of the rib and the tooth surface on both sides of the top tooth are inclined curved surfaces; the tooth surface of one side of the rotating tooth is a diagonal curved surface, and the other side tooth surface is a vertical surface.

Specifically, the upper end of the turntable is provided with an upwardly extending guiding portion, and the button is provided with a guiding hole that cooperates with the guiding portion.

Specifically, the pushing member includes a support platform and at least one upright extending downward from a bottom of the support table, and an upper end of the return spring abuts against the support table.

Further, the inflator further includes a positioning seat at the air outlet, the positioning seat is connected to the bottom of the lower valve body through a spoke, and the spoke is provided with a through slot; the lower valve pad is connected to the At the bottom of the positioning seat, when the button is pressed, the column passes through the through slot and abuts the lower valve pad.

Preferably, the pushing member further comprises a hook portion disposed at a lower end of the column.

Further, the pushing member further includes a top platform disposed at a top end of the support table and extending upward, and the upper valve pad is coupled to the top table.

Preferably, the cross-sectional area of the top table is smaller than the cross-sectional area of the air inlet.

Preferably, the inflator further includes a seal attached to the air valve.

The technical effect of the present invention over the prior art is that the present invention provides an axially arranged button and a turntable in the upper valve body such that when the button is pressed to a preset stroke position, the turntable is in the axial direction during the pressing process. Moving downwards, and after reaching the preset stroke position, will also produce a certain angle of rotation in the circumferential direction, and finally stop on the upper valve body after stopping the pressing, thereby achieving continuous pressing without using fingers or other auxiliary tools. The upper valve cushion and the lower valve cushion can be kept in a stable open state at the same time, thereby achieving continuous deflation, and the operation process is simple and convenient.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention or the description of the prior art will be briefly described below. Obviously, the drawings described below are only the present invention. For some embodiments, other drawings may be obtained from those of ordinary skill in the art without departing from the drawings.

1 is a schematic view showing the assembly of an inflator provided by an embodiment of the present invention;

Figure 2 is an exploded perspective view of the inflator of Figure 1;

Figure 3 is a cross-sectional view of the inflator of Figure 1;

Figure 4 is a schematic view showing the assembly of the gas valve of Figure 1;

Figure 5 is an exploded perspective view of the gas valve of Figure 4;

Figure 6 is a cutaway view of the gas valve of Figure 4 in a state;

Figure 7 is a cutaway view of the gas valve of Figure 4 in another state;

Figure 8 is a perspective view of the upper valve body of Figure 5;

Figure 9 is a cross-sectional view of the upper valve body of Figure 8;

Figure 10 is a schematic view showing the assembly of the button and the turntable of Figure 5 in a state;

Figure 11 is a schematic view showing the assembly of the button and the turntable of Figure 5 in another state;

Figure 12 is a perspective view of the button of Figure 5;

Figure 13 is a perspective view of the turntable of Figure 5;

Figure 14 is a perspective view of the upper valve pad of Figure 5;

Figure 15 is a perspective view of the pusher of Figure 5;

Figure 16 is a perspective view of the lower valve body of Figure 5;

Figure 17 is a perspective view of the lower valve pad of Figure 5.

Detailed ways

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

Referring to FIG. 1 to FIG. 3, an inflator provided by an embodiment of the present invention includes an airbag 10 and a gas valve 20, and the airbag 10 is hollow inside and communicates with the valve chamber 201 of the air valve 20. The gas valve 20 includes an upper valve body 21, an upper valve pad 22, a button 24, a turntable 25, a lower valve body 26, a lower valve pad 27, a pusher 28, and a return spring 29. The upper valve body 21 is provided with an air inlet 211, and the air inlet 211 can communicate with the outside atmosphere; the lower valve body 26 is provided with an air outlet 261, and the air outlet 261 can communicate with the device to be inflated. The upper valve pad 22 is disposed at the bottom of the upper valve body 21 for sealing the air inlet 211 and can be opened unidirectionally. When the upper valve pad 22 is opened, the valve chamber 201 of the air valve 20 can communicate with the outside atmosphere through the air inlet 211. The lower valve pad 27 is disposed at the bottom of the lower valve body 26 for sealing the air outlet 261 and can be opened in one direction. When the lower valve pad 27 is opened, the valve chamber 201 of the air valve 20 is communicated with the device to be inflated through the air outlet 261. The button 24 and the turntable 25 are axially disposed in the upper valve body 21, and the pushing member 28 is disposed between the upper valve pad 22 and the lower valve pad 27, and the return spring 29 abuts against the pushing member 28 and the lower portion Between the valve bodies 26. When the button 24 is pressed to the preset stroke, the turntable 25 is axially moved to open the upper valve pad 22 and the lower valve pad 27 is opened by the pushing member 28, and simultaneously rotated circumferentially to lock onto the upper valve body 21.

The inflator provided by the embodiment of the present invention provides an axially arranged button 24 and a turntable 25 in the upper valve body 21 such that when the button 24 is pressed to a preset stroke position, the turntable 25 is in the axial direction during the pressing process. Moving downwards, and also reaching a certain angle of rotation in the circumferential direction after reaching the preset stroke position, and finally locking on the upper valve body 21 after stopping the pressing, thereby achieving continuous pressing without using fingers or other auxiliary tools The upper valve pad 22 and the lower valve pad 27 can be kept in a stable open state, thereby achieving continuous deflation, and the above operation process is simple and convenient.

It should be noted that the above-mentioned "preset stroke" refers to the movement of the button 24 from the initial position in the axial direction when the user presses the button 24 to the turntable 25 with a finger or other auxiliary tool and locks on the upper valve body 21. The trip value to that point. However, the preset stroke is not a specific value, but an interval segment, and the specific size of the preset stroke is related to the specific design dimensions of the upper valve body 21, the button 24 and the turntable 25, and also the user presses the button. The force at 24 o'clock and the stiffness of the return spring 29 have a certain relationship.

It should be noted that, in the inflator provided by the embodiment of the present invention, the inner sealing members of the airbag 10 and the air valve 20, such as the upper valve pad 22 and the lower valve pad 27, are mainly made of a soft material having elasticity. For example, PTFE, silica gel, etc.; and the main structural components of the gas valve 20, such as the upper valve body 21, the lower valve body 26, the button 24, the turntable 25, and the pusher 28, are made of hard plastic.

As shown in FIG. 2 and FIG. 3, in the embodiment of the present invention, the airbag 10 is formed by fastening the upper air cover 11 and the lower air cover 12, and the upper air cover 11 includes an upper cover body 111 having a bowl shape at one end and the other end substantially. The upper air ring 112 is annular, and the lower air cover 12 includes a lower cover 121 having a bowl shape at one end and a lower ring 122 having a substantially annular shape at the other end. The upper cover body 111 and the lower cover body 121 are sealingly coupled together and form an air chamber 101 so that the hand can be gripped or pressed. The upper wrap 112 and the lower wrap 122 are sealingly fixedly connected to the outer periphery of the upper valve body 21 and the lower valve body 26 of the gas valve 20, respectively, by a process of overmolding. A groove 123 communicating the lower cover 121 and the lower wrap 122 is further provided on the lower air cap 12, and the recess 123 can be used to connect the air chamber 101 and the valve chamber 201.

As shown in FIG. 3 to FIG. 5, in the embodiment of the present invention, the gas valve 20 is composed of an upper valve body 21, a button 24, a turntable 25, an upper valve pad 22, a pushing member 28, which are arranged from top to bottom along the axial direction thereof. The return spring 29, the lower valve body 26, and the lower valve pad 27 are assembled and assembled. An upper valve cover 213 having a brim-like shape extends circumferentially from the outer wall of the upper valve body 21, and is sealingly and fixedly connected to the upper wrap 112 by the upper valve cover 213. The upper valve cover 213 is further arranged with an arc-shaped fixing hole 2131 so that the molten liquid glue can fill the fixing hole 2131 when the rubber-filled fixing is performed, so that the upper valve body 21 and the upper wrap 112 are formed after molding. The room can be surrounded more closely.

As shown in Fig. 4, in the embodiment of the present invention, in order to make the assembly between the upper valve body 21 and the lower valve body 26 of the gas valve 20 more efficient, the bottom end of the upper valve cover 213 of the upper valve body 21 is downward. A positioning sleeve 214 is disposed extending along the circumferential array, and a positioning post 265 is fitted upwardly at an upper end of the lower valve body 26. The positioning post 265 can be directly inserted into the positioning sleeve 214 during assembly, so that positioning can be relatively easy. A valve chamber 201 is formed between the upper valve body 21 and the lower valve body 26. The upper valve body 21 is provided with an air inlet 211 extending through the upper and lower ends thereof, and the lower valve body 26 is provided with an air outlet 261 extending through the upper and lower ends thereof. When both the pad 22 and the lower valve pad 27 are in an open state, the valve chamber 201, the air inlet 211, and the air outlet 261 are in communication with each other.

As shown in FIG. 1, FIG. 3 and FIG. 4, in the embodiment of the present invention, in the initial state, the upper valve pad 22 is pressed against the bottom of the upper valve body 21 under the preload force of the return spring 29 to seal it in. The gas port 211 and the lower valve pad 27 are attached to the bottom of the lower valve body 26 due to self-elasticity to seal the air outlet 261. When the inflator is required to be inflated, the airbag 10 is usually gripped or squeezed by hand, and the air chamber 101 in the airbag 10 is reduced in volume and air pressure is increased. At this time, air in the airbag 10 enters the valve chamber 201 through the recess 123. Since the air pressure in the valve chamber 201 is larger than the outside at this time, the upper valve pad 22 is still in close contact with the bottom of the upper valve body 21, and the outer periphery of the lower valve pad 27 is opened by the air pressure, so the air in the valve chamber 201 After entering the equipment to be inflated, the air pressure process is completed; the airbag 10 is elastic material, and will be restored to its original state after releasing the hand. At this time, the volume of the air chamber 101 is enlarged, and the pressure in the air chamber 101 is reduced, and the lower valve cushion 27 is The pressure difference will be pressed against the bottom end surface of the lower valve body 26, and the upper valve pad 22 is opened by the external atmospheric pressure, and the outside air can enter the inside of the airbag 10, thereby completing the inhalation process, repeatedly gripping or pressing the airbag 10 Compressing and inhaling can be continuously circulated, thereby functioning to inflate the device to be inflated.

As shown in FIG. 3, FIG. 8 and FIG. 9 , in particular, in order to achieve the function of continuous deflation when pressing once during deflation, in the embodiment of the invention, the upper valve body 21 includes a fixed connection to the inner wall thereof. The positioning cylinder 23 is fixedly disposed in the air inlet 211, and the button 24 and the dial 25 are axially disposed in the positioning cylinder 23 to prevent the two from being misaligned when moving. On the inner wall of the positioning cylinder 23, n (n is a natural number greater than or equal to 1) ribs 231 extending in the axial direction thereof are uniformly spaced apart in the circumferential direction. In this embodiment, the positioning cylinder 23 is fixedly connected to the inner wall of the upper valve body 21 by the connecting strip 233 evenly distributed on the outer peripheral surface thereof, and the rib 231, the positioning cylinder 23 and the connecting strip 233 are integrally formed, and the production process is simple and efficient. Of course, it can also be processed separately and assembled later.

As shown in FIG. 5 to FIG. 7 and FIG. 10 to FIG. 13 , in the embodiment of the present invention, in order to fit the structure of the positioning cylinder 23, the outer peripheral surface of the button 24 is correspondingly provided with the ribs 231. The first guiding groove 241 has a bottom portion of the button 24 uniformly provided with 2n top teeth 242 in the circumferential direction. Correspondingly, the outer peripheral surface of the turntable 25 is correspondingly provided with a second guiding groove 251 which is engaged with each of the ribs 231, and the top of the turntable 25 is correspondingly provided with 2n rotating teeth 252 engaged with the respective top teeth 242 in the circumferential direction, and rotates. The tooth flanks on one side of the teeth 252 are adapted to the bottom end faces of the ribs 231. In this embodiment, the first guiding grooves 241 are evenly spaced between the 2n top teeth 242, and the second guiding grooves 251 are evenly spaced between the 2n rotating teeth 252, so that the button 24 is pressed each time. The preset strokes for achieving continuous deflation are basically the same. Preferably, the number of the ribs 231, the first guiding grooves 241 and the second guiding grooves 251 is four, and the top teeth 242 and the rotating teeth 252 are all eight.

As shown in FIG. 8 to FIG. 13 , preferably, the bottom end surface of the rib 231 and the tooth surface on both sides of the top tooth 242 of the inflator provided by the embodiment of the present invention are both inclined surfaces, and the tooth surfaces of the rotating teeth 252 are corresponding to each other. It is a beveled surface and the other side of the tooth surface is a vertical surface. By arranging the two faces of the bottom end face of the rib 231, the two side faces of the top teeth 242 and one side of the rotating teeth 252 to be inclined, so that when the button 24 is pressed, between the bottom end face and the rotating tooth 252 And the sliding between the top teeth 242 and the rotating teeth 252 is smoother, so that no abnormality of the click occurs during the pressing. Of course, the bottom end surface of the rib 231, the two side surfaces of the top tooth 242, and one side surface of the rotating tooth 252 may also be disposed in other shapes of planes or curved surfaces, such as oblique straight faces, involute surfaces, etc., and only need to be in contact with each other. The two faces can be coupled to each other and have a certain inclination angle with the horizontal plane.

As shown in FIG. 6 and FIG. 10, in the initial state, one side of the top teeth 242 of the button 24 and one side of the rotating teeth 252 of the turntable 25 are coupled together, and the first guiding groove 241 on the button 24 is coupled. The second guide groove 251 on the turntable 25 is distributed in a straight line, and both are embedded in the rib 231 of the positioning cylinder 23, thereby being slidable in the axial direction of the positioning cylinder 23 by an external force. When the button 24 is pressed with a finger or other auxiliary tool and the preset stroke is not reached, the button 24 and the dial 25 will remain axially moved without being rotated due to the limitation of the rib 231. At this time, the bottom end of the turntable 25 will overcome the force of the return spring 29 to open the upper valve pad 22, and at the same time, the lower valve pad 27 can be opened by the pushing member 28 disposed under the upper valve pad 22, thereby realizing the device to be inflated and External connectivity. When the button 24 is stopped, the upper valve pad 22 is again tightly attached to the bottom of the upper valve body 21 by the return spring 29, so that a short deflation can be achieved to adjust the air pressure in the device to be inflated.

As shown in FIG. 7 and FIG. 11 , in another state, when the button 24 is pressed to a position close to the preset stroke, the turntable 25 will no longer be embedded in the positioning cylinder through the second guiding slot 251. The ribs 231 in the 23 are not restricted from the axial direction of the ribs 231. Since the bottom end of the rib 231 has a slanted curved surface, and one side of the rotating tooth 252 of the turntable 25 is a slanted curved surface that cooperates with it, the turntable 25 will rotate at a certain angle under the axial force of the button 24. After reaching the preset position and releasing the button 24, under the reaction force of the return spring 29, a vertical surface of the rotating tooth 252 will slide relative to the side of the rib 231, so that the rib 231 finally enters the adjacent The two rotating teeth 252 are in the slots. Since the second guide groove 251 which is fitted to the rib 231 is not provided in the tooth groove, the turntable 25 will be locked on the rib 231, and it is no longer possible to move along the axial direction of the positioning cylinder 23 or along it. Rotation in the circumferential direction thus also causes the upper valve pad 22 and the lower valve pad 27 to remain open, whereby the device to be inflated will remain in communication with the outside atmosphere, thereby achieving rapid, continuous deflation. It can be understood that, in this embodiment, since the return spring 29 is further disposed between the pushing member 28 and the lower valve body 26, the button 24 can automatically rebound in a free state after being pressed to a preset stroke and stopped pressing. come back.

Continuing to refer to FIG. 6 and FIG. 10, when it is necessary to restore the initial state of the inflator, the button 24 is pressed again and the turntable 25 is pressed. At this time, the inclined surface of the top tooth 242 of the button 24 and the oblique surface of the top tooth 242 of the turntable 25 are inclined. Cooperating, under the reaction force of the return spring 29, the turntable 25 slides along the bottom end of the rib 231 on the positioning cylinder 23 by the rotating tooth 252, and generates a certain angle of deflection, and finally the rib on the positioning cylinder 23. 231 falls back into the slot of a rotating tooth 252 provided with the second guiding groove 251, and the first guiding groove 241 and the second guiding groove 251 are restored to a straight line, so that the turntable 25 can be unlocked and Free to slide in the axial direction. After the button 24 is released, the pushing member 28 is restored to the initial position by the return spring 29, and the upper valve pad 22 and the turntable 25 are also restored to the initial position under the force of the pushing member 28, and the lower valve The pad 27 is restored to the initial sealing state attached to the bottom of the lower valve body 26 by the elastic force due to the detachment of the pushing member 28.

As shown in FIG. 10 to FIG. 13 , in the process of pressing the button 24, in order to maintain the positioning of the button 24 and the turntable 25, the two are prevented from deviating in the axial direction during the relative movement. In the embodiment of the present invention, the turntable is The upper end of the 25 is provided with an upwardly extending guiding portion 253. The button 24 is correspondingly provided with a guiding hole 244 which cooperates with the guiding portion 253, that is, the guiding portion 253 is inserted into the guiding hole 244. Further, a pressing portion 243 is extended upward at the top end of the button 24 and a stepped cylindrical structure is formed to facilitate pressing when the user uses it.

Referring back to FIG. 6 to FIG. 9, further, in the embodiment of the present invention, an annular limiting flange 232 extends in the radial direction on the inner wall of the positioning cylinder 23, through the limiting flange 232. The sliding of the button 24 and the turntable 25 in the axial direction can be limited to a certain range, so that after the button 24 is released, the button 24 and even the turntable 25 are rushed together from the positioning cylinder 23 due to the action of the return spring 29. The situation arises.

As shown in FIG. 3, FIG. 15 and FIG. 16, in particular, the pushing member 28 provided by the embodiment of the present invention includes a support base 282 and at least one upright 283 extending downward from the bottom of the support base 282, and the upper end of the return spring 29 Adjacent to the bottom of the support table 282, the number of the columns 283 is preferably four and uniformly arranged in the circumferential direction. The support table 282 has a truncated cone shape, and the upper end surface thereof is used for supporting the upper valve pad 22, and has a larger support area to prevent the soft upper valve pad 22 from being broken; and the column 283 has a flat rectangular shape for the top. Open the lower lower valve pad 27 below. In this embodiment, in order to place the return spring 29, a positioning seat 262 is provided at the air outlet 261. The positioning seat 262 is connected to the bottom of the lower valve body 26 via the spoke 263. The spoke 263 is provided with a through groove 264, and the lower valve pad 27 is connected to the positioning seat 262. When the button 24 is pressed, the column 283 passes through the through groove 264 and abuts against the lower valve pad 27. The positioning seat 262 is connected by the spokes 263 of the band-passing groove 264. In one aspect, the positioning seat 262 can be fixed, and on the other hand, the pushing member 28 can be restrained within a certain range to prevent it from rotating at a large angle. In particular, the pushing member 28 further includes a hook portion 284 disposed at a lower end of the column 283. The hook portion 284 can function as an axial limit, that is, during the recovery of the return spring 29, the pushing can be prevented. The condition in which the member 28 is disengaged from the positioning seat 262 occurs.

As shown in FIG. 3, FIG. 14 and FIG. 15, further, in the implementation of the present invention, the pushing member 28 further includes a top table 281 which is disposed at the top end of the support table 282 and extends upward. The upper valve pad 22 is connected to the top table 281. . The upper valve pad 22 is directly connected to the top table 281 at the lower end thereof, so that the pushing member 28 can directly abut the upper valve pad 22 through the top table 281 under the force of the return spring 29, which can not only better The sealing effect is achieved, and the components for resetting the upper valve pad 22 need not be specifically provided, thereby simplifying the overall structure of the gas valve 20. Further, the cross-sectional area of the top table 281 is smaller than the cross-sectional area of the air inlet 211, so that in the initial state, if it is necessary to blow the air inlet 211 with the mouth, although the center of the upper valve pad 22 The portion is still abutted by the return spring 29 through the top table 281, but the outer edge of the upper valve pad 22 will be slightly curled downward under the action of the air flow, so that the air flow can enter the valve cavity 201 from the air inlet 211. Internally, while the lower valve pad 27 is fixed only in the positioning seat 262 only by the central portion, the outer peripheral edge thereof is also relatively slightly curled downward under the action of the air flow, so that the airbag 10 can be manually pressed without being manually pressed, and only the mouth can be used. Achieving inflation of the device to be inflated.

Continuing to refer to FIG. 3, FIG. 14 and FIG. 15, the upper valve pad 22 according to the embodiment of the present invention includes an upper sealing piece 221, an upper connecting portion 222 and an upper fastening portion 223, and the top table 281 of the pushing member 28 is correspondingly disposed. There is a top hole 2811 connected to the upper buckle portion 223. The upper buckle portion 223 has a truncated cone shape, and because of its elasticity, it can be easily squeezed into the top hole 2811 while the connection is relatively firm. Preferably, the upper sealing sheet 221 has a disk shape and can be attached to the bottom of the valve body in a free state, and can also be curled along the periphery under a certain air pressure. The lower valve pad 27 of the embodiment of the present invention includes a lower sealing piece 271, a lower connecting portion 272 and a lower fastening portion 273. The positioning seat 262 is provided with a connecting hole 2621 connected to the lower fastening portion 273. Wherein, the sealing sheet is preferably in the shape of a dish, which has a good self-sealing effect in a free state, and can also be curled along the periphery under a certain air pressure; the lower buckle portion 273 has a truncated cone shape to facilitate the lower valve cushion 27 The mounting is fixed in the positioning seat 262.

In the following, as shown in FIG. 1 to FIG. 3 , in order to avoid the damage of the upper air cushion 22 or the lower valve cushion 27 , the air leakage device of the embodiment of the present invention further includes the hanging device. The seal 30 on the upper valve body 21. One end of the sealing member 30 is provided with a hanging ring 32 which can be hung in the hanging groove 212 near the upper end surface of the upper valve body 21, and the other end is provided with a sealing plug 31 which can cooperate with the air inlet 211 of the air valve 20. When the inflator is not required, the sealing plug 31 can be inserted in the air inlet 211, which can increase the sealing performance of the air valve 20. It is convenient to use the sealing plug 31 when it is needed.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

An inflator includes an air bag and an air valve, the air bag is hollow inside and communicates with a valve cavity of the air valve, wherein the air valve includes an upper valve body, an upper valve pad, a button, a turntable, and a lower valve body a lower valve pad, a pushing member and a return spring; the upper valve body is provided with an air inlet, and the upper valve pad is disposed at the bottom of the upper valve body for sealing the air inlet and can be unidirectional Opening; the lower valve body is provided with an air outlet, the lower valve pad is disposed at the bottom of the lower valve body for sealing the air outlet and can be opened in one direction; the button and the turntable are axially disposed on In the upper valve body, the pushing member is disposed between the upper valve pad and the lower valve pad, the return spring is disposed between the pushing member and the lower valve body; pressing the button to the pre-pre When the stroke is set, the turntable moves axially to open the upper valve cushion and the lower valve cushion is opened by the pushing member, and simultaneously rotates circumferentially to lock on the upper valve body.
The inflator according to claim 1, wherein said upper valve body comprises a positioning cylinder fixedly coupled to an inner wall thereof, and said inner wall of said positioning cylinder is provided with n axially extending intervals evenly spaced circumferentially a rib; the button and the turntable are arranged in the positioning cylinder in the axial direction, and the outer peripheral surface of the button is correspondingly provided with a first guiding groove fitted with each of the ribs, and the bottom of the button is evenly distributed in the circumferential direction 2n top teeth are provided; the outer peripheral surface of the turntable is correspondingly provided with a second guiding groove matched with each of the ribs, and the top of the turntable is correspondingly provided with rotation corresponding to each of the top teeth in the circumferential direction a tooth, a tooth surface on one side of the rotating tooth is adapted to a bottom end surface of the rib; wherein n is a positive integer.
The inflator according to claim 2, wherein the bottom end surface of the rib and the tooth surface on both sides of the top tooth are inclined curved surfaces; the tooth surface of one side of the rotating tooth is obliquely curved, and the other is The side flank is a vertical face.
The inflator according to claim 2, wherein the upper end of the turntable is provided with an upwardly extending guide portion, and the button is provided with a guide hole that cooperates with the guide portion.
The inflator of claim 1 wherein said pushing member comprises a support table and at least one upright extending downwardly from a bottom of said support table, said upper end of said return spring abutting said support On the stage.
The inflator of claim 5, further comprising a positioning seat at the air outlet, the positioning seat being connected to the bottom of the lower valve body by a spoke, wherein the spoke is provided with a through slot The lower valve pad is connected to the bottom of the positioning seat, and when the button is pressed, the column passes through the through groove and abuts the lower valve pad.
The inflator according to claim 6, wherein said pushing member further comprises a hook portion provided at a lower end of said upright.
The inflator according to any one of claims 5 to 7, wherein the pushing member further comprises a top portion which is disposed at a top end of the support table and extends upward, and the upper valve pad is connected to the top On the stage.
The inflator of claim 8 wherein said abutment has a cross-sectional area that is less than a cross-sectional area of said inlet.
The inflator according to any one of claims 1 to 7, further comprising a seal attached to the air valve.